When LeRoy sees his father arrive home, he begins to clean his room. Given this information, we can conclude ONLY that the father's arrival is:

Speed, magnitude, durability and generality of effect are some of the MOST important

Mr. Winston has developed a reward system in his classroom where only those students who have submitted homework for 5 out of 5 days in the week receive a reward from the "treasure box." This is an example of a (n):

Holly is learning to use a spoon to feed herself. Applesauce is known to function as a reinforcer. Her teacher has selected the following objective for Holly: "Given a spoon and a 3-ounce dish of applesauce, Holly will independently scoop the applesauce to her mouth." This objective is incomplete. Which component is missing?

A 4-year-old child is lying in bed at night while the parents are sitting in the living room talking to guests. The child begins to make loud noises. In the past, the parents have gone into the child's room to quiet him. The parents and guests agree to ignore the child completely and continue to talk. If the parents stick with this approach and the child stops making noises, the parents have successfully used.